This API uploads to Azure Storage the content provided block by block by getDataCallback under the blob name devicename/.
IOTHUB_CLIENT_RESULT IoTHubDeviceClient_LL_UploadMultipleBlocksToBlob( IOTHUB_DEVICE_CLIENT_LL_HANDLE iotHubClientHandle, const char * destinationFileName, IOTHUB_CLIENT_FILE_UPLOAD_GET_DATA_CALLBACK_EX getDataCallbackEx, void * context );
iotHubClientHandleThe handle created by a call to the create function.
destinationFileNamename of the file.
getDataCallbackExA callback to be invoked to acquire the file chunks to be uploaded, as well as to indicate the status of the upload of the previous block.
contextAny data provided by the user to serve as context on getDataCallback.
IOTHUB_CLIENT_OK upon success or an error code upon failure.